A local entrepreneur sells t-shirts. Each t-shirt costs $15. If the local entrepreneur wants to make$500 *in profit per day, how many t-shirts would she need to sell?​

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

31/6= 19/6 19/6 *1/7=19/42

and surely you know how much that is.